DE102007051659A1 - Device and method for the return of exhaust gas of an internal combustion engine - Google Patents
Device and method for the return of exhaust gas of an internal combustion engine Download PDFInfo
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- DE102007051659A1 DE102007051659A1 DE102007051659A DE102007051659A DE102007051659A1 DE 102007051659 A1 DE102007051659 A1 DE 102007051659A1 DE 102007051659 A DE102007051659 A DE 102007051659A DE 102007051659 A DE102007051659 A DE 102007051659A DE 102007051659 A1 DE102007051659 A1 DE 102007051659A1
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- exhaust gas
- pressure side
- heat exchanger
- compressor
- heat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
- F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/24—Layout, e.g. schematics with two or more coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/27—Layout, e.g. schematics with air-cooled heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/71—Multi-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Die Erfindung betrifft eine Vorrichtung zur Rückführung von Abgas eines Verbrennungsmotors, umfassend einen abgasgetriebenen Verdichter (2), wobei ein Abgasstrom hochdruckseitig in den Verdichter (2) eintritt und niederdruckseitig aus dem Verdichter (2) austritt, einen bezüglich des Verdichters (2) hochdruckseitigen Abzweig (5a) für rückgeführtes Abgas, und zumindest einen Abgaskühler (10, 12) zur Überführung von Wärme aus dem abgezweigten Abgasstrom (5a) in ein Kühlmedium, wobei ein Wärmeübertrager (7) vorgesehen ist, über den Wärme zwischen dem hochdruckseitig abgezweigten Abgasstrom (5a) und einem bezüglich des Verdichters niederdruckseitigem Abgasstrom (8) übertragbar ist.The invention relates to a device for recirculation of exhaust gas of an internal combustion engine, comprising an exhaust gas driven compressor (2), wherein an exhaust gas flow on the high pressure side in the compressor (2) and low pressure side from the compressor (2) exits, with respect to the compressor (2) high pressure side branch (5a) for recirculated exhaust gas, and at least one exhaust gas cooler (10, 12) for transferring heat from the branched exhaust gas stream (5a) into a cooling medium, wherein a heat exchanger (7) is provided, via the heat between the exhaust gas branched off on the high pressure side (5a ) And with respect to the compressor niederdruckseitigem exhaust stream (8) is transferable.
Description
Die Erfindung betrifft eine Vorrichtung zur Rückführung von Abgas eines Verbrennungsmotors nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zur Rückführung von Abgas eines Verbrennungsmotors.The The invention relates to a device for recirculating exhaust gas of an internal combustion engine the preamble of claim 1 and a method for recycling Exhaust gas of an internal combustion engine.
Es ist bekannt, Abgas eines Verbrennungsmotors abzuzweigen und nach einer Kühlung als Beimischung wieder zuzuführen. Hierdurch werden unter anderem Reduzierungen von Schadstoffen wie Stickoxiden erreicht. Einer der verantwortlichen Effekte ist dabei die Verringerung der Verbrennungs-Spitzentemperatur insbesondere bei Dieselmotoren. Gegenwärtig werden in der Praxis Rückführraten von 30% bei Volllast erreicht. Eine weitere Erhöhung der Rückführraten ist in der Praxis unter anderem dadurch limitiert, dass ein zu hoher Wärmeeintrag in den oder die Abgaskühler resultiert.It is known to divert exhaust gas of an internal combustion engine and after a cooling to be reintroduced as an admixture. As a result, among other things, reductions of pollutants such as nitrogen oxides reached. One of the responsible effects is the reduction the combustion peak temperature especially in diesel engines. At present, return rates are in practice achieved by 30% at full load. Another increase in the return rates is in practice among others limited by the fact that too high a heat input into the or exhaust gas cooler results.
Es ist die Aufgabe der Erfindung, eine Vorrichtung und ein Verfahren zur Rückführung von Abgas anzugeben, das auf einfache Weise eine hohe Rückführrate von Abgas ermöglicht.It The object of the invention is an apparatus and a method for the return of Specify exhaust gas, in a simple way, a high return rate of Exhaust gas allows.
Diese Aufgabe wir für eine eingangs genannte Vorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Regelmäßig liegt die Abgastemperatur niederdruckseitig des Verdichters unter der hochdruckseitigen Temperatur, so dass ein Teil der Wärme des hochdruckseitig abgezweigten rückzuführenden Abgasstroms an den niederdruckseitigen Abgasstrom erfindungsgemäß mittels eines Wärmeübertragers abgegeben werden kann. Hierdurch verringert sich die erforderliche Kühlleistung des Abgaskühlers bzw. die Rückführrate bei gegebenem Abgaskühler kann erhöht werden. Insbesondere können in der Praxis Rückführraten von mehr als 30% besonders vorteilhaft Rückführraten von mehr als 35% und besonders vorteilhaft Rückführraten von 40% oder mehr als 40% erreicht werden, ohne größere Änderung an bestehenden Abgaskühlern vorzunehmen.These Let's do it for you an initially mentioned device according to the invention with the characterizing features of claim 1. Regularly the exhaust gas temperature on the low pressure side of the compressor under the high pressure side temperature, so that part of the heat of the high-pressure side branched to be recycled Exhaust gas flow to the low-pressure side exhaust stream according to the invention by means a heat exchanger can be delivered. This reduces the required cooling capacity of the exhaust gas cooler or the return rate at given exhaust gas cooler can be increased become. In particular, you can in practice, return rates of more than 30% particularly advantageous return rates of more than 35% and particularly advantageous return rates 40% or more than 40% can be achieved without major change on existing exhaust gas coolers make.
In besonders bevorzugter Ausführungsform der Erfindung ist niederdruckseitig stromabwärts des Wärmeübertragers zumindest ein Mittel zur Abgas-Nachbehandlung, insbesondere aus der Gruppe Speicherkatalysator, Reduktionskatalysator oder Partikelfilter, vorgesehen. Da die herkömmliche Rückführung von Abgas auch zu einer Erniedrigung der Abgastemperatur nach Verdichter führt, kann bei weiterer Erhöhung der Rückführrate unter Umständen die zuverlässige Funktion der Mittel zur Abgas-Nachbehandlung in Frage gestellt sein. NOx-Speicherkatalysatoren benötigen wenigstens 100°C, Oxidations-Katalysatoren benötigen wenigstens 150°C, NOx-Katalysatoren für selektive katalytische Reduktion benötigen wenigstens 200°C und für die Regeneration eines NOx-Speicherkatalysators oder Abgas-Partikelfilters werden Temperaturen von mehr als 250°C erforderlich. Die erfindungsgemäße Vorrichtung bietet eine einfache Möglichkeit, um solche Temperaturen des nicht rückgeführten Abgases auch bei hoher Rückführrate noch erzielen zu können.In Particularly preferred embodiment of Invention is at low pressure downstream of the heat exchanger at least one means for exhaust aftertreatment, in particular from the group storage catalyst, reduction catalyst or particle filter provided. Since the conventional return of exhaust gas also to a Lowering the exhaust gas temperature leads to compressor can on further increase the return rate below circumstances the reliable one Function of the means for exhaust aftertreatment be called into question. NOx storage catalysts need at least 100 ° C, Need oxidation catalysts at least 150 ° C, NOx catalysts for selective need catalytic reduction at least 200 ° C and for the Regeneration of a NOx storage catalytic converter or exhaust gas particulate filter Temperatures of more than 250 ° C are required. The device according to the invention offers an easy way such temperatures of the non-recirculated exhaust gas even at high Return rate still to achieve.
Bei einer bevorzugten Weiterbildung ist der niederdruckseitige Abgasstrom des Wärmeübertragers ein Teilstrom des niederdruckseitigen Abgasstroms des Verdichters. Besonders bevorzugt ist dabei der Teilstrom über ein Stellglied einstellbar. Hierdurch kann auf einfache Weise eine Leistungsregelung des Wärmeübertragers erfolgen. Zudem kann hierdurch erreicht werden, dass der Teilstrom auf eine besonders hohe Temperatur aufheizbar ist, um zum Beispiel bestimmte Prozesse bei einer nachgeschalteten Abgasreinigung beeinflussen.at A preferred development is the low-pressure side exhaust stream of the heat exchanger a partial flow of the low-pressure side exhaust stream of the compressor. Particularly preferably, the partial flow is adjustable via an actuator. As a result, in a simple manner, a power control of the heat exchanger respectively. In addition, this can be achieved that the partial flow to a particularly high temperature is heatable, for example influence certain processes in a downstream exhaust gas purification.
Bei einer einfachen und zweckmäßigen Ausführungsform ist der Wärmeübertrager ein einteilig ausgebildeter Wärmetauscher ist, der mit hochdruckseitigem Abgasstrom und niederdruckseitigem Abgasstrom durchströmbar ist bzw. durchströmt ist bzw. durchströmt wird. Hierdurch wird eine unmittelbare Wärmeübertragung der Abgasströme mit einer einfachen Vorrichtung erreicht.at a simple and convenient embodiment is the heat exchanger a one-piece heat exchanger is, with the high-pressure side exhaust stream and niederdruckseitigem Flow through the exhaust gas is or flows through is or flows through becomes. As a result, a direct heat transfer of the exhaust gas streams with a achieved simple device.
Alternativ kann der Wärmeübertrager aber auch einen niederdruckseitigen Wärmetauscher und einen hochdruckseitigen Wärmetauscher umfassen, die über ein Fluid thermisch verbunden sind. Hierdurch ergeben sich Möglichkeiten der räumlich getrennten Anordnung der Wärmeübertragungen der Abgasströme sowie eine einfache Möglichkeit der Regelung der Übertragungsleistung sowie einer Pufferung bzw. Vergleichmäßigung der Wärmeübertragung. Das Fluid, zum Beispiel ein flüssiges Kühlmittel, kann zudem bei Bedarf weitere Komponenten des Kraftfahrzeugs durchströmen.alternative can the heat exchanger but also a low-pressure side heat exchanger and a high-pressure side heat exchangers include that over a fluid are thermally connected. This results in possibilities the spatially separate arrangement of heat transfer the exhaust gas streams as well as an easy way the regulation of the transmission power as well as a buffering or equalization of the heat transfer. The fluid, for example, a liquid Coolant, In addition, if required, it is possible to flow through further components of the motor vehicle.
Eine weitere vorteilhafte Ausführungsform sieht vor, dass der Wärmeübertrager ein Wärmerohr umfasst. Wärmerohre ermöglichen eine besonders effektive Wärmeübertragung insbesondere bei relativ geringen Temperaturunterschieden und können zudem zu einer Vergleichmäßigung der auf den niederdruckseitigen Abgasstrom übertragenen Wärmeleistung beitragen.A sees further advantageous embodiment before that the heat exchanger includes a heat pipe. heat pipes enable a particularly effective heat transfer especially at relatively low temperature differences and can also to a homogenization of the on the low-pressure side exhaust gas transmitted heat output contribute.
Allgemein bevorzugt ist der Abgaskühler ein indirekter Abgaskühler zur Übertragung von Wärme an einen Kühlmittelkreis, insbesondere einen Hauptkühlkreislauf des Verbrennungsmotors. Alternativ oder ergänzend kann es aber auch ein direkter Abgaskühler zur Übertragung von Wärme auf Umgebungsluft sein. In besonders bevorzugter Detailgestaltung ist dabei ein erster, indirekter Abgaskühler und ein zweiter, direkter Abgaskühler vorgesehen, wodurch eine besonders große Kühlleistung erreicht wird, die eine hohe Rückführrate ermöglicht.Generally, the exhaust gas cooler is an indirect exhaust gas cooler for transmitting heat to a coolant circuit, in particular a main cooling circuit of the internal combustion engine. Alternatively or additionally, however, it may also be a direct exhaust gas cooler for the transfer of heat to ambient air. In a particularly preferred detailed design, a first, indirect exhaust gas cooler and a second, direct exhaust gas cooler are provided, whereby a particularly large cooling capacity is achieved, which allows a high return rate.
In einer Ausgestaltung ist dabei ein erster, indirekter Abgaskühler und ein zweiter, indirekter Abgaskühler vorgesehen, wodurch eine besonders große Kühlleistung erreicht wird, die eine hohe Rückführrate ermöglicht.In An embodiment is a first, indirect exhaust gas cooler and a second, indirect exhaust gas cooler provided, whereby a particularly large cooling capacity is achieved, the a high return rate allows.
Die Aufgabe der Erfindung wird für ein eingangs genanntes Verfahren zur Rückführung von Abgas eines Verbrennungsmotors erfindungsgemäß mit den Merkmalen des Anspruchs 11 gelöst. Bevorzugt findet dabei eine erfin dungsgemäße Vorrichtung Verwendung. Die Übertragung von Wärme vom hochdruckseitigen Abgasstrom auf den niederdruckseitigen Abgasstrom ermöglicht eine verbesserte Kühlung des rückgeführten Abgases sowie die Bereitstellung ausreichend hoher Temperaturen für eine nachfolgende Abgasreinigung. Hierzu wird der niederdruckseitige Abgasstrom vorteilhaft einem Mittel zur Abgas-Nachbehandlung, insbesondere aus der Gruppe Speicherkatalysator, Reduktionskatalysator oder Partikelfilter, zugeführt.The The object of the invention is for an initially mentioned method for recycling exhaust gas of an internal combustion engine according to the invention with the Characteristics of claim 11 solved. Preferably, a device according to the invention is used. The transfer of heat from the high-pressure side exhaust stream to the low-pressure side exhaust stream allows an improved cooling the recirculated exhaust gas and providing sufficiently high temperatures for a subsequent one Emission control. For this purpose, the low-pressure side exhaust stream is advantageous a means for exhaust aftertreatment, in particular from the group Storage catalyst, reduction catalyst or particle filter, fed.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den nachfolgend beschriebenen Ausführungsbeispielen sowie aus den abhängigen Ansprüchen.Further Advantages and features of the invention will become apparent from the following described embodiments and from the dependent claims.
Nachfolgend werden mehrere Ausführungsbeispiele der Erfindung beschrieben und anhand der anliegenden Zeichnungen näher erläutert.following be several embodiments described the invention and with reference to the accompanying drawings explained in more detail.
Das
Ausführungsbeispiel
der Erfindung gemäß
Die
hochdruckseitige Leitung
Der
zur Rückführung abgezweigte
Abgasstrom durchströmt
zunächst
erfindungsgemäß einen Wärmeübertrager
Stromabwärts des
Wärmeübertragers
Der
rückgeführte Abgasstrom
Nach
dem ersten Abgaskühler
Es
versteht sich, dass die erfindungsgemäße Anordnung des Wärmeübertragers
Bei
einem zweiten Ausführungsbeispiel
gemäß
Bei
dem dritten Ausführungsbeispiel
gemäß
Bei
dem vierten Ausführungsbeispiel
gemäß
Es versteht sich, dass die einzelnen spezifischen Merkmale der beschriebenen Ausführungsbeispiele je nach Anforderungen sinnvoll miteinander kombiniert werden können.It It is understood that the individual specific features of the described embodiments can be meaningfully combined with each other depending on requirements.
Claims (13)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007051659A DE102007051659A1 (en) | 2007-10-26 | 2007-10-26 | Device and method for the return of exhaust gas of an internal combustion engine |
| AT08842507T ATE547615T1 (en) | 2007-10-26 | 2008-10-21 | DEVICE AND METHOD FOR RECIRCULATION OF EXHAUST GAS FROM AN INTERNAL COMBUSTION ENGINE |
| JP2010530322A JP2011501031A (en) | 2007-10-26 | 2008-10-21 | Apparatus and method for circulating exhaust gas from an internal combustion engine |
| EP08842507A EP2212540B1 (en) | 2007-10-26 | 2008-10-21 | Apparatus and method for returning exhaust gas of an internal combustion engine |
| PCT/EP2008/008888 WO2009053025A1 (en) | 2007-10-26 | 2008-10-21 | Apparatus and method for returning exhaust gas of an internal combustion engine |
| US12/766,469 US20100199664A1 (en) | 2007-10-26 | 2010-04-23 | Device and method for recirculating exhaust gas in an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007051659A DE102007051659A1 (en) | 2007-10-26 | 2007-10-26 | Device and method for the return of exhaust gas of an internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102007051659A1 true DE102007051659A1 (en) | 2009-04-30 |
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ID=40329058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102007051659A Withdrawn DE102007051659A1 (en) | 2007-10-26 | 2007-10-26 | Device and method for the return of exhaust gas of an internal combustion engine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100199664A1 (en) |
| EP (1) | EP2212540B1 (en) |
| JP (1) | JP2011501031A (en) |
| AT (1) | ATE547615T1 (en) |
| DE (1) | DE102007051659A1 (en) |
| WO (1) | WO2009053025A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110100342A1 (en) * | 2009-11-02 | 2011-05-05 | International Engine Intellectual Property Company Llc | Forced convection egr cooling system |
| FR2980532B1 (en) * | 2011-09-26 | 2013-09-27 | Peugeot Citroen Automobiles Sa | MOTOR VEHICLE MOTOR WATER OUTPUT HOUSING WITH A LOW PRESSURE AND HIGH PRESSURE EGR THERMAL EXCHANGER AND ITS STEERING VALVES |
| FR3000140B1 (en) * | 2012-12-21 | 2019-05-17 | Valeo Systemes Thermiques | THERMAL MANAGEMENT DEVICE FOR THE INTAKE AIR OF A MOTOR AND ASSOCIATED THERMAL MANAGEMENT METHOD |
| US9528428B2 (en) * | 2014-10-14 | 2016-12-27 | Deere & Company | Cooling system for charge air cooler |
| KR101786678B1 (en) * | 2016-04-29 | 2017-11-15 | 현대자동차 주식회사 | Apparatus for retrieving exhaust heat of engine method using the same |
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| EP1843033A2 (en) * | 2006-04-03 | 2007-10-10 | MAN Nutzfahrzeuge Österreich AG | Exhaust system of an internal combustion engine for a motor vehicle with exhaust gas recirculation |
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2007
- 2007-10-26 DE DE102007051659A patent/DE102007051659A1/en not_active Withdrawn
-
2008
- 2008-10-21 EP EP08842507A patent/EP2212540B1/en not_active Not-in-force
- 2008-10-21 WO PCT/EP2008/008888 patent/WO2009053025A1/en not_active Ceased
- 2008-10-21 AT AT08842507T patent/ATE547615T1/en active
- 2008-10-21 JP JP2010530322A patent/JP2011501031A/en active Pending
-
2010
- 2010-04-23 US US12/766,469 patent/US20100199664A1/en not_active Abandoned
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002195106A (en) * | 2000-12-22 | 2002-07-10 | Hino Motors Ltd | EGR device |
| DE102005002518B3 (en) * | 2005-01-19 | 2006-08-03 | Pierburg Gmbh | Exhaust gas recirculation system for an internal combustion engine and exhaust gas recirculation method |
| EP1843033A2 (en) * | 2006-04-03 | 2007-10-10 | MAN Nutzfahrzeuge Österreich AG | Exhaust system of an internal combustion engine for a motor vehicle with exhaust gas recirculation |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2212540A1 (en) | 2010-08-04 |
| EP2212540B1 (en) | 2012-02-29 |
| WO2009053025A1 (en) | 2009-04-30 |
| US20100199664A1 (en) | 2010-08-12 |
| JP2011501031A (en) | 2011-01-06 |
| ATE547615T1 (en) | 2012-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120501 |